Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 850mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke850 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S
The AirTAC SAIJ50X850-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 750 to 850 mm usable travel window. Equipped with a SUS304 stainless steel rod and a -S magnet, it generates 982 N of push thrust and 825 N of pull thrust at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for straightforward positioning feedback.
Because the 850 mm stroke is substantial, the 20 mm rod diameter and M16x1.5 rod thread require external guiding to counteract side loads. The rear adjuster acts purely as a travel stop for end-position tuning during commissioning; it is not a lock and cannot hold a load without live air pressure. For load-holding without air, consider an external rod lock or the AirTAC SAIL series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×850 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S Is Used
Variable Length Diverter
Adjusts the retract distance on a packaging line to divert boxes of varying sizes without changing hardware.
Machine Commissioning
Fine-tunes the 750 to 850 mm travel end-stop during setup to achieve precise seating without mechanical shims.
Product Size Changeover
Quickly modifies the effective stroke on automated assembly lines when switching between different product lengths.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S the Right Cylinder?
Choose this 50 mm bore when an application requires moderate force (982 N push at 0.5 MPa) but demands flexible end-positioning over a long 750 to 850 mm window. If you need higher clamping power, stepping up to the 63 mm bore yields 1559 N at 0.5 MPa, while dropping to a 40 mm bore reduces output to 628 N. The adjustable stroke is ideal for product changeovers, allowing you to dial in the exact retract distance without swapping cylinders or adding external stops.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 850 mm nominal stroke, 100 mm adjustment range, PT tapered ports, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Given the 850 mm stroke, an external guide is strongly recommended to support the rod and prevent binding.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-100S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster allows you to shorten the effective travel from the 850 mm nominal stroke down to 750 mm. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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